Artificial curbstone



FIG. 1 is a perspective view of the curbstone;

FIG. 2 is a left-hand side view of the curbstone;

FIG. 3 is a right-hand side view of the curbstone;

FIG. 4 is a front view of the curbstone;

FIG. 5 is a rear view of the curbstone;

FIG. 6 is a top view of the curbstone; and,

FIG. 7 is a bottom view of curbstone.

The ornamental design for artificial curbstone, as shown and described.